<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<script>
    var arr = [20,30,50,60,88,63,76,100,1000,555];
        var max = arr[1];
        var min = arr[2];
        for(var i= 0;i<arr.length;i++){
            if (min>arr[i]){
                min=arr[i];
            }
            if (max<arr[i]){
                max=arr[i];
            }
        }


        console.log("最大值"+max);
        console.log("最小值"+min);
</script>

</body>
</html>